Improvement in stoves



F. MAGUIRE.

Stove.

No. l41,8912. Patented March 8, 1864.

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NA PETERS. Pbokn-liihagrlphcr. Wnlhnglnll. D. C.

, `UNTTED STATES PATENT OEEICE.

FRANCIS MAGUIRE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND THOMAS H. CONEYS, OF SAME PLACE.

IM PROVEM ENT IN STOVES.

Specification forming part of Letters Patent No. 4 I ,892, dated March 8, 1864.

To a/ZZ whom t may concern:

Beit known that I, FRANCIS MAGUIEE, a resident of Boston, in the county of Suli'olk and State of Massachusetts, have invented an Improved Stove; and I do hereby declare the same to be fully described in the following specification, and represented inthe accompanying drawings, of which- Figure 1 denotes avertical section of it; Fig. 2,-a horizontal section of it, and Fig. 3 a side elevation of it; Fig. 4, a top view, and Fig. 5 a front elevation, of the dome of the fire-chamber.

In the said drawings, A denotes the firechamber or chamber for containing the fuel, it being provided with a grate, a, and a receiving-throat, b. This fuel-chamber, which is of a cylindrical form, is surrounded by an air space or chamber, B, which is provided with an induction passage or throat, c, which goes .through the smoke-chamber B and opens out of the rear part of the stove, the throat of the said air-chamber being supplied with a register or air-induction valve, d.

The external casing, e, of the stove encompasses the air-chamber, and has a smokespace, D, between it and Lthe said air-chamber and going over the dome e of the latter, the whole being as shown in Figs. 2 and 3. Underneath the grate is the ash-chamber F, which opens out of the front of the stove, and is surrounded by a hollow base or auxiliary smoke-chamber, G, out of the rear part of which a smoke-discharge or eduction pipe, f, leads.

The dome of the fire-chamber is made in two parts, g h, each of which is hollow and opens out of the air-chamber. The rear portion, h, rises above the front part, g, of the said dome in such manner as to leave a crescent-shaped duct or passage, i, between the two. The smoke and gases from the rechamber are to escape through the passage i and over the front .half or part of the dome, and thence into the smoke chamber or space D, down which they will pass and enter the auxiliary smoke-chamber G by openings-k k (see Fig. 2) made through the bottom lof the said smoke-space D.

Near the top and bottom of the throat of the nre-chamber there are horizontal rows of holes,m, which lead from the air-chamber B into the fire-chamber, and are for the purpose of supplying air to the top of the fuel as well as to the flame and smoke which may rise therefrom. Furthermore, the inner plates, Z m', of Aboth parts g h of the hollow dome of the fire-chamber are foraminous, lin order that airv may be discharged in numerous small streams through them and into the iame and volatile products of combustion which may arise from the fuel. The upper plate, a, of front portion, g, of the said dome is also foraminous close to the educt z', in order that air may escape from the part g and upward into the current of smoke when passing out of the educt t'. The sides of the nre-place throat, where they cross the air-chamber B, are foraminous, in order to allow air to escape from the said chamber and pass across the throat,in order to intercept the heat radiated from the flame and prevent it from destroying or injuring the mica plate o, which is placed in the door p of the fire-place throat.

In the operation of this stove the smoke, after having escaped from the tire-chamber by or through its educt i, will pass around in the smoke-chamber D, and from thence into the auxiliary or base smokechamber, G, from whence it will escape by the eduction-pipe f.

The surplus air of the air-chamber B will esv cape through the uppermostV foramens thereof and, mingling with the smoke and escaping gases,will not only aid in promoting combustion of them in the chamber B, but thereby contribute to the heating of its sides. Air

from the chamber B, as well as fromits dome, will also rush into the flame and over the fuel which may be in the nre-chamber, such air operating to facilitate combustion of the fuel and the gases evolved from it. Prior to its entrance into the nre-chamber the air of the chamber B becomes heated by the ame of supplying and heating chamberl B with the fire-chamber A and the surrounding smoke space or chamber D.

2. The combinationand arrangement of the air supplying and heating chamber B, the fire-chamber A, the surrounding smoke-space D, and the auxiliary chamber G. l

3. The peculiar nre-chamber dome as made in two parts, g h, and With one of them eX- tended above the other, so as to form therewith the crescent or equivalent shaped educt f, the smaller being provided with air-discharging openings arranged in it, as described.

4;. rlhe arrangement of air-holes in the sides of the throat of the fireplace and out of the air-heating chamber, so as to discharge air across the throat, in manner and for the purpose specified.

\ FRANCIS MAGUIRE.

Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

